ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2013, Vol. 34 ›› Issue (2): 1-3.

• 试验研究 •    下一篇

Al,Ti,Nb,Mo含量对新型Ni-25Cr-20Co镍基合金中γ′和η析出相的影响

郝文慧1,武敏1,罗刚1,王珏2,谢锡善2   

  1. 1. 太原钢铁(集团)有限公司先进不锈钢材料国家重点实验室,太原 030003;
    2. 北京科技大学,北京 100083 ;
  • 收稿日期:2012-09-25 出版日期:2013-04-01 发布日期:2022-09-30
  • 作者简介:郝文慧(1985-),女,硕士,助理工程师,新型镍基合金的开发

Effect of Al, Ti, Nb and Mo Content on γ′and η Precipitated Phase in a New Ni-25Cr-20Co Nickel Base Superalloy

Hao Wenhui1  , Wu Min1  , Luo Gang1  , Wang Jue2  , Xie Xishan2   

  1. 1. State Key Laboratory of Advanced Stainless Steel Materials, Taiyuan Iron and Steel (Group) Co Ltd, Taiyuan 030003 ;
    2. University of Science and Technology, Beijing 100083
  • Received:2012-09-25 Published:2013-04-01 Online:2022-09-30

摘要: 利用热力学计算软件Thermo-Calc分析了新型Ni-25Cr-20Co镍基高温合金(/%:0.03C、25Cr、20Co、0.50Mo、1.38Al、1.38Ti、1.50Nb、余Ni)中可能的平衡析出相,得出该合金的平衡状态图和Al、Ti、Nb、Mo含量(分别为0.5%~2.5%)对γ′和η相析出行为的影响。结果表明,增加Al、Ti和Nb的含量可以提高γ′相的析出量,但Ti和Nb会促进η相的析出并扩大其析出温度范围,Co和Mo对两种析出相的影响较少。

关键词: Ni-25Cr-20Co高温合金,  γ′相, η相, 析出行为, 热力学计算

Abstract: The possible equilibrium precipitated phases in a new Ni-25Cr-20Co nickel base superalloy (/% : 0.03C, 25Cr, 20Co, 0.50Mo, 1.38Al, 1.38Ti, 1.50Nb, others Ni) are analyzed by software Thermo-Cale to get the equilibrium condition diagram of the superalloy and the effect of Al, Ti, Nb and Mo content ( respectively 0.5%-2.5% ) on precipitation behavior of γ′and η phase. Results show that with increasing Al, Ti and Nb content the precipitated amount of γ′ phase in the superalloy increases while the Ti an Nb can promote the precipitation of η phase and enlarge its precipitation temperature range. The Co and Mo have minor influence on both precipitated phases.

Key words: Ni-25Cr-20Co Superalloy, γ′ Phase, η Phase, Precipitation Behavior, Thermodynamic Calculation